import store from '../store'
import CryptoJS from 'crypto-js'
import qs from 'qs'
import common from '../utils/common'
import {
	baseURL
} from '@/api/config'

let requestNum = 0 // 当前请求数量
// console.log(baseURL)
export function request({
	url,
	method,
	data,
	...config
}, isLoading = false, isErrorToast = true) {
	data = {
		...store.state.sysInfo,
		...data
	}
	showLoading(isLoading)
	return new Promise((resolve, reject) => {
		uni.request({
			url: baseURL + url,
			method: method || 'POST',
			data: {
				...data,
				sign: getSign(data)
			},
			header: {
				'content-type': 'application/x-www-form-urlencoded',
				token: store.state.token
			},
			timeout: 30000,
			...config,
			success: ({
				statusCode,
				data = {}
			}) => {
				if (statusCode === 200) {
					if (data.code === 205 || data.code === 206) {
						resolve(data)
					} else if (data.code >= 200 && data.code < 300) {
						resolve(data.data)
					} else {
						reject(errHandle(data.code, data, isErrorToast))
					}
				} else {
					reject(errHandle(statusCode, data, isErrorToast))
				}
			},
			fail: xhr => {
				console.log('failXhr => ', xhr)
				reject(errHandle(null, null, isErrorToast))
			},
			complete: () => {
				hideLoading(isLoading)
			}
		})
	})
}

function errHandle(code, data, isErrorToast) {
	if (code === 401 || code === 402 || code === 403) {
		// 401 未登录或者 token 过期，402 账号在其他地方登录
		store.commit('exit')
	}
	if (isErrorToast) {
		common.toast(data.msg || '请求失败，请稍后再试')
	}
	return {
		code,
		data
	}
}

function getSign(obj) {
	// 按 ASCII 码排序
	let str = qs.stringify(obj, {
		sort: (a, b) => a.localeCompare(b)
	})

	// 拼接密钥
	str += '&key=fec905e4e7568e8f70529e1dc1f51c59'
	str = decodeURIComponent(str)

	// MD5 运算
	// str = CryptoJS.MD5(str)

	// AES 加密
	str = common.Encryption(str)

	// 转大写
	str = str.toUpperCase()

	return str
}

function showLoading(isLoading) {
	if (!isLoading) return

	requestNum++
	if (requestNum === 1) {
		uni.showLoading({
			title: '加载中...'
		})
	}
}

function hideLoading(isLoading) {
	if (!isLoading) return

	requestNum--
	if (requestNum <= 0) {
		uni.hideLoading()
	}
}